DNS delegation of 172.198 updated: May 18, 2013 5:09:54 PM
Delegation
step
query
auth
servers
1
198.172.in-addr.arpa.
.
(c,g,e,m,d,b,l,i,h,k,j,a,f).root-servers.net.
2
198.172.in-addr.arpa.
in-addr.arpa.
(b,e,f,a,d,c).in-addr-servers.arpa.
3
198.172.in-addr.arpa.
172.in-addr.arpa.
(t,y,w,v,z,x,r,u).arin.net.
4
198.172.in-addr.arpa.
198.172.in-addr.arpa.
(daha-07,daha-01,daha-02).ns.aol.com.
We pick c.root-servers.net, one of the 13 root servers (1), and ask it about 198.172.in-addr.arpa and learn that in-addr.arpa is delegated to six name servers (2), so we ask b.in-addr-servers.arpa where we learn that 172.in-addr.arpa is delegated to eight name servers, including t.arin.net (3), so we ask that one and learn that 198.172.in-addr.arpa is delegated to three name servers (4), so we ask daha-07.ns.aol.com and get the following answer: